| 摘要 |
PROBLEM TO BE SOLVED: To obtain a resin composition which has good resistance to alcohol shock and gives a film with good water resistance, by dissolving or dispersing a vinyl copolymer produced by suspension polymerization and having a specified solid acid value and hydroxyl number in an aqueous medium containing a volatile base to give an aqueous liquid, and subjecting a vinyl monomer mixture to emulsion polymerization in the aqueous liquid. SOLUTION: The vinyl copolymer (A) is produced by suspension polymerization and has a solid acid value of 50-200 mg KOH/g, a solid hydroxyl number of 5-80 mg KOH/g, a weight-average molecular weight of 5,000 to 500,000, and a mean particle diameter of 30-400μm. Examples of preferable vinyl compound containing an acid radical and a hydroxyl group include (meth)acrylic acid, itaconic acid and 2-hydroxyethyl (meth)acrylate. A base preferably used for dissolving or dispersing component A is ammonia. A vinyl monomer mixture [preferably glycidyl (meth)acrylate, etc.] in an amount of 30-300 pts.wt. based on 100 pts.wt. component A is subjected to emulsion polymerization by dispersing it in the aqueous medium having component A dispersed therein.
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